Add a space after colored text - excel

Question

I'm Using Microsoft Excel 2013.
I have a lot of data that I need to separate in Excel that is in a single cell. The "Text to Columns" feature works great except for one snag.
In a single cell, I have First Name, Last Name & Email address. The last name and email addresses do not have a space between them, but the color of the names are different than the email.
Example (all caps represent colored names RGB (1, 91, 167), lowercase is the email which is just standard black text):
JOHN DOEjohndoe#acmerockets.com
So I need to put a space after DOE so that it reads:
JOHN DOE johndoe#acmerockets.com
I have about 20k rows to go through so any tips would be appreciated. I just need to get a space or something in between that last name and email so I can use the "Text to Columns" feature and split those up.

Answer 1

Not a complete answer, but I would do it way:
Step 1 to get rid of the formatting:
Copy all text that you have to the notepad
Then copy-paste text from Notepad to excel as text
I think this should remove all the formatting issues
Step 2 is to use VBA to grab emails. I assume that you have all your emails as lowercase. Therefore something like this should do the trick (link link2):
([a-z0-9\-_+]*#([a-z0-9\-_+].)?[a-z0-9\-_+].[a-z0-9]{2,6})
Step 3 is to exclude emails that you extracted from Step2 from your main text. Something like this via simple Excel function:
=TRIM(SUBSTITUTE(FULLTEXT,EMAIL,""))
Since you removed all the formatting in Step1, you can apply it back when you done

Answer 2

You can knock this out pretty quickly taking advantage of a how Font returns the Color for a set of characters that do not have the same color: it returns Null! Knowing this, you can iterate through the characters 2 at a time and find the first spot where it throws Null. You now know that the color shift is there and can spit out the pieces using Mid.
Code makes use of this behavior and IsNull to iterate through a fixed Range. Define the Range however you want to get the cells. By default it spits them out in the neighboring two columns with Offset.
Sub FindChangeInColor()
Dim rng_cell As Range
Dim i As Integer
For Each rng_cell In Range("B2:B4")
For i = 1 To Len(rng_cell.Text) - 1
If IsNull(rng_cell.Characters(i, 2).Font.Color) Then
rng_cell.Offset(0, 1) = Mid(rng_cell, 1, i)
rng_cell.Offset(0, 2) = Mid(rng_cell, i + 1)
End If
Next
Next
End Sub
Picture of ranges and results
The nice thing about this approach is that the actual colors involved don't matter. You also don't have to manually search for a switch, although that would have been the next step.
Also your neighboring cells will be blank if no color change was found, so it's decently robust against bad inputs.
Edit adds ability to change original string if you want that instead:
Sub FindChangeInColorAndAddChar()
Dim rng_cell As Range
Dim i As Integer
For Each rng_cell In Range("B2:B4")
For i = 1 To Len(rng_cell.Text) - 1
If IsNull(rng_cell.Characters(i, 2).Font.Color) Then
rng_cell = Mid(rng_cell, 1, i) & "|" & Mid(rng_cell, i + 1)
End If
Next
Next
End Sub
Picture of results again use same input as above.